7.3l Power Stroke

The Power Stroke brand has had its ups and downs. But arguably the most sought after diesel engine in a truck was the 7.3L Power Stroke. The 7.3L Power Stroke diesel was developed to be a advanced replacement for the aging 7.3L IDI. The 7.3L Power Stroke is not as some may assume simply an evolution to the 7.3L IDI. The Power Stroke boasts a direct injection system as well as being turbocharged. The “Power Stroke” trademark belongs to Ford Motor Company, and therefore you will only find the 7.3 “Power Stroke” in Ford applications.

Characterized by its HEUI (hydraulic electric unit injector) injection system, which uses highly pressurized engine oil as a medium for creating fuel pressure directly in the injector body. The 7.3L Power Stroke utilizes a high pressure oil pump (HPOP) and a low pressure lift pump in order to create fuel pressures up to 21,000 psi. In comparison to the prior mechanical injection system, the transition to HEUI promised improved performance, lower emissions, and better fuel economy stemming from increased fuel atomization and greater control over injection events.

The popularity of Ford’s International powered F-Series pickups is distinguishable in its production numbers, which greatly exceeded that of any competing manufacturer’s diesel sales. By 1999, 1 million Power Stroke equipped trucks had been delivered to dealerships. As demand soared following Ford’s introduction of the Super Duty platform, the 2 millionth 7.3L Power Stroke equipped F-Series rolled off the assembly line in 2002. The 7.3L Power Stroke has earned praise as one of the most popular engines offered in a pickup truck, its name synonymous with reliability and longevity.

A greater demand for fuel economy and significantly lower emissions ultimately led to the retirement of the 7.3L during the 2003 model year. For the 2003 MY, the 7.3L Power Stroke was offered alongside the new, smaller 6.0L Power Stroke. By the beginning of the 2004 MY, the 6.0L Power Stroke had completely replaced the 7.3L.